The ground state electronic configuration of S is `3s^(2) 3 p^(4)` . How does it form the compound `SF_(6)` ?

Magnesium reacts with an element (X) to form an ionic compound . If the ground state electronic configuration of (X) is 1s^(2) 2s^(2) 2p^(3) , the simplest formula for this compound is -

Magnesium reacts with an element (X) is forms a ionic compound .If the ground state electron configuration of (X) is 1s^(2) 2s^(2) 2p^(2) , the simple formula for the compound is

Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is 1s^(2),2s^(2)2p^(3) , the simplest formula for this compound is

Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is 1s^2 2s^2 2p^3 , the simplest formula for this compound is